Ball hitch stem



FIG. 1 is a front perspective view of a ball hitch stem showing my new design;

FIG. 2 is front elevational view thereof, with the rear elevational view being a mirror image of FIG. 2;

FIG. 3 is a right side elevational view thereof, with the left side elevational view being a mirror image of FIG. 3;

FIG. 4 is a top plan view thereof; and,

FIG. 5 is a bottom plan view thereof.

The broken line showing of environment is for illustrative purposes only and forms no part of the claimed design. 

The ornamental design for a ball hitch stem, as shown and described. 